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Difficulty: MediumEmergency Equipment Requirements

A driver is conducting a pre-trip safety check on a power unit dispatched to haul a placarded shipment of Class 3 flammable liquids. In addition to spare electrical fuses and three bidirectional reflective triangles, which fire extinguisher specification must the driver verify is securely mounted and fully charged in the cab?

  1. A
    A fire extinguisher with a minimum Underwriters Laboratories (UL) rating of 5 B:C
  2. A fire extinguisher with a minimum Underwriters Laboratories (UL) rating of 10 B:CAnswer
  3. C
    Two separate dry chemical fire extinguishers each rated at a minimum of 2 B:C
  4. D
    A pressurized water fire extinguisher carrying a minimum rating of 2-A

Answer

A fire extinguisher with a minimum Underwriters Laboratories (UL) rating of 10 B:C is required for a power unit transporting placarded hazardous materials.
Federal Motor Carrier Safety Regulations specify that any commercial motor vehicle transporting hazardous materials that require placarding must carry at least one securely mounted, fully charged fire extinguisher with an Underwriters Laboratories (UL) rating of 10 B:C or higher.

Step-by-Step Solution

1
Identify the cargo classification and regulatory scope from the scenario.
The commercial vehicle is transporting a placarded hazardous materials load.
Federal regulations specify increased emergency equipment standards for vehicles transporting hazardous cargo requiring placards compared to general freight.
2
Determine the required fire extinguisher rating under federal safety regulations.
A minimum UL rating of 10 B:C is mandatory for placarded hazardous material transport.
A higher fire suppression capability is legally required to ensure adequate protection against potential fuel, chemical, and electrical fires.

Key Concept

Mandatory fire extinguisher ratings for placarded hazardous material commercial vehicles
Estimated Time:1m 0s
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Topics

Emergency Equipment Requirements

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